Here's an example of a dial with an equitorial band all around. http://www.dickkoolish.com/rmk_page/sundials/phillips_andover.html
> On Mon, Sep 28, 2015 at 3:24 PM, Dan-George Uza <[email protected]> > wrote: > >> Hello, >> >> Tonight I saw the trailer for "The 100-Year-Old Man Who Climbed Out the >> Window and Disappeared". >> >> https://www.youtube.com/watch?v=P-k7DUQPHfQ >> >> After the old man climbs out the window at 0:53 he walks past what >> appears >> to be a cast iron armillary sundial. However, as the equatorial band >> seems >> to completely circle the globe I think this piece would not show >> time...at >> least not around the equinoxes! >> >> > Sure, some armillaries aren't sundials, but I'm sure that I've seen > armillary sundials that had the equatorial band all the way around. IIf > the > band is of uniform width, then it won't tell time when the sun is > *exactly* > on the equator, but, even if the declination is the *least bit* non-zero, > the gnomon will have a shadow on the hour-band. So I don't suppose that an > armillary with an equatorial band would lose more than a few days of > time-telling each year. > > Besides, maybe the upper part of the equatorial band is narrower than the > lower part, as is sometimes the case. > > Michael Ossipoff > --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
